José de Jesús Díaz Mendoza (June 28, 1950 – January 4, 2001), known by the ring name of Villano I (Villano Primero), was a Mexican luchador enmascarado, or masked professional wrestler. He was the son of luchador Ray Mendoza, and the first of the five Díaz Mendoza brothers to become a professional wrestler, although not the oldest. His older brother Alfredo wrestled as Villano II until his death in 1989, while his younger brothers wrestle under the names Villano III (Arturo), Villano V (Raymundo), and Villano IV (Tomás).